Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I was using time to profile make builds, and I noticed that having -j 8 was several milliseconds slower than -j 4. I am compiling with gcc on a Intel Core2 Quad, so there are only four processor cores. Could this slowdown be due to the resource limitations, and whatever make uses to schedule jobs is adding some overhead?
If you have more processes running than processors, then the operating system will require some context switching. This isn’t an issue with
make; it’s just how jobs are scheduled when there are insufficient resources.